New Delhi, Oct 27: It seems India's most wanted terrorist Dawood Ibrahim is shrinking behind the doors after India and united States recently decided to take action against him. Reports say that the terrorist has changed his den from Karachi to some undisclosed location.

Intelligence sources say that Pakistan's Inter-Services Intelligence ( ISI) has shifted him from high-security mansion in Karachi's clifton area to a new location which is close to Pakistan-Afghanistan border.

The sources say that both ISI and Dawood is worried about recent bonhomie between India and US. The latter recently had pledged for providing all possible help in nabbing one of dreaded terrorist, wanted in number of terror attacks in India. He is the mastermind of 1992 Mumbai terror attacks.

When Indian Prime Minister Narendra Modi had visited United States, the President Barack Obama had assured him of all help, thereby giving new dynamics to Indo-US relationship. Sources says that this is giving sleepless night to both ISI and Dawood Ibrahim.

At that time, the National Security Advisor Ajit Doval was given task to discuss with his American counterpart and other senior Obama Administration officials a strategy to be adopted to implement the Indo-US commitment on this front.

A joint statement, issued after the talks between Modi and US President Barack Obama, said, "The leaders stressed the need for joint and concerted efforts, including the dismantling of safe havens for terrorist and criminal networks, to disrupt all financial and tactical support for networks such as Al Qaeda, Lashkar-e Taiba, Jaish-e-Mohammad, the D-Company, and the Haqqanis.

"They reiterated their call for Pakistan to bring the perpetrators of the November 2008 terrorist attack in Mumbai to justice."

On asking about this recent development, Intelligence sources said, "Dawood seems to have gone completely underground. He has not been seen or even heard of interacting with his close aides. The Inter-Services Intelligence and Dawood appear under a lot of pressure".